BSC3270-OPT-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsBSC3270-OPT-MIB

Category: SNA and Legacy Protocols

Description: Manages BSC 3270 (Binary Synchronous Communication) protocol options for IBM terminal emulation.

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What Is BSC3270-OPT-MIB?

BSC3270-OPT-MIB is a proprietary MIB, apparently from a communications controller product line (object names are prefixed cdx6500), managing the BSC 3270 (Binary Synchronous Communication) protocol option used for IBM mainframe 3270 terminal emulation over synchronous links. It exposes protocol and device group configuration for PCT- and PST-type ports, indicating which physical ports are set up to emulate BSC 3270 devices. It is used mainly to monitor the software/protocol configuration status of legacy terminal-emulation ports — confirming a given synchronous port is correctly configured for BSC 3270 emulation rather than another protocol — making it a configuration-status rather than hardware-health monitor. It works alongside the vendor's underlying serial/synchronous interface and chassis MIBs, which identify the physical ports being configured with this BSC 3270 option. It is deployed on legacy communications controllers or protocol converters bridging IBM mainframe BSC 3270 terminal traffic onto modern network infrastructure. Engineers can download the BSC3270-OPT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in BSC3270-OPT-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • Motorola Codex 6500-series data/statistical multiplexer (legacy)

Monitoring Examples

The available objects — cdx6500PCTPortProtocolGroup, cdx6500PCTBSC3270DeviceGroup, and cdx6500PSTPortProtocolGroup — read as configuration/grouping objects rather than fine-grained runtime counters, so a detailed anomaly-detection scenario can't be honestly built from them. In general, an administrator would check whether a given port's cdx6500PCTBSC3270DeviceGroup is populated to confirm that port is actively configured for 3270 terminal emulation rather than a different synchronous protocol.

What Can Be Monitored

  • port protocol assignment (BSC3270 vs. other)
  • 3270 device emulation configuration per port
Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
enterprises

From SNMPv2-TC

DisplayString
OIDs

RFC description

Codex/Ulticom vendor MIB for BSC3270 device configuration, statistics, and control on CDX6500 platforms (RFC1155-SMI based).

Start monitoring Motorola Codex 6500-series data/statistical multiplexer (legacy) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download BSC3270-OPT-MIB